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Journal Article 1988-02-28

Autor: Neuenschwander, P. Herren, H.R. Harpaz, I. Badulescu, D. Akingbohungbe, A.E.

Since its accidental introduction into Africa, the cassava mealybug (CM) has spread to about 25 countries. The specific parasitoid Epidinocarsis lopezi, introduced from South America, its area of origin, into Nigeria in 1981, has since been released in more than 50 sites. By the end of 1986 it wa...

Enlace original: https://cgspace.cgiar.org/handle/10568/80709

Investigación en Agricultura
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Neuenschwander, P. ,  Herren, H.R. ,  Harpaz, I. ,  Badulescu, D. ,  Akingbohungbe, A.E. ,  [Biological control of the cassava mealybug, Phenacoccus manihoti, by the exotic parasitoid Epidinocarsis lopezi in Africa [and Discussion]] ,  Biological control of the cassava mealybug, Phenacoccus manihoti, by the exotic parasitoid Epidinocarsis lopezi in Africa [and Discussion]
Journal Article 1985-8

Autor: Lema, K.M. Herren, H.R.

Life table studies were conducted to assess the effect of constant temperature on the rate of population growth of the cassava mealybug, Phenacoccus manihoti Matile‐Ferrero. Four temperatures, between 20 and 30.5 °C, were tested. An inverse relationship was observed between temperature and most d...

Enlace original: https://cgspace.cgiar.org/handle/10568/96442

Investigación en Agricultura
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Lema, K.M. ,  Herren, H.R. ,  [The influence of constant temperature on population growth rates of the cassava mealybug, Phenacoccus manihoti] ,  The influence of constant temperature on population growth rates of the cassava mealybug, Phenacoccus manihoti
Journal Article 1988

Autor: Gutiérrez, A.P. Neuenschwander, P. Schulthess, F. Herren, H.R. Baumgaertner, J.U. Wermelinger, B. Lohr, B. Ellis, C.K.

(1) The effects of the cassava mealybug, Phenacoccus manihoti Mat.-Ferr., on cassava, Manihot esculenta Crantz, growth, development and yields as modified by weather, soil water and nitrogen, and natural enemies were examined. (2) Rainfall-induced mortality and plant carbohydrate stress were the...

Enlace original: https://cgspace.cgiar.org/handle/10568/96338

Investigación en Agricultura
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Gutiérrez, A.P. ,  Neuenschwander, P. ,  Schulthess, F. ,  Herren, H.R. ,  Baumgaertner, J.U. ,  Wermelinger, B. ,  Lohr, B. ,  Ellis, C.K. ,  [Analysis of the biological control of cassava pests in Africa: II. Cassava mealybug (Phenaccoccus manihoti)] ,  Analysis of the biological control of cassava pests in Africa: II. Cassava mealybug (Phenaccoccus manihoti)
Journal Article 1988

Autor: Gutiérrez, A.P. Yaninek, John S. Wermelinger, B. Herren, H.R. Ellis, C.K.

(1) The effects of the cassava mealybug, Phenacoccus manihoti Mat.-Ferr., on cassava, Manihot esculenta Crantz, growth, development and yields as modified by weather, soil water and nitrogen, and natural enemies were examined. (2) Rainfall-induced mortality and plant carbohydrate stress were the...

Enlace original: https://cgspace.cgiar.org/handle/10568/96337

Investigación en Agricultura
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Gutiérrez, A.P. ,  Yaninek, John S. ,  Wermelinger, B. ,  Herren, H.R. ,  Ellis, C.K. ,  [Analysis of biological control of cassava pests in Africa: III. Cassava green mite Mononychellus tanajoa] ,  Analysis of biological control of cassava pests in Africa: III. Cassava green mite Mononychellus tanajoa
Journal Article 1988

Autor: Gutiérrez, A.P. Wermelinger, B. Schulthess, F. Baumgaertner, J.U. Herren, H.R. Ellis, C.K. Yaninek, John S.

( 1 ) A model for the growth and development of cassava, Manihot esculenta Crantz, as modified by weather, soil nitrogen and water is described, and used in later papers to evaluate damage by exotic cassava pests and the effectiveness of control by natural. (2) Analogous relationships between t...

Enlace original: https://cgspace.cgiar.org/handle/10568/96339

Investigación en Agricultura
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Gutiérrez, A.P. ,  Wermelinger, B. ,  Schulthess, F. ,  Baumgaertner, J.U. ,  Herren, H.R. ,  Ellis, C.K. ,  Yaninek, John S. ,  [Analysis of biological control of cassava pests in Africa: I. Simulation of carbon, nitrogen and water dynamics in cassava] ,  Analysis of biological control of cassava pests in Africa: I. Simulation of carbon, nitrogen and water dynamics in cassava
Journal Article 1992

Autor: Yaninek, John S. Megevand, B. Moraes, G.J. Bakker, F. Braun, A. Herren, H.R.

Populations of the phytoseiid predator Amblyseius(=Neoseiulus) idaeus (Denmark & Muma) From Northeastern Brazil, have been successfully introduced into Benin, West Africa, as part of a classical biological control campaign to control the exotic cassava green mite, Mononychellus tanajoa (Bondar). ...

Enlace original: https://cgspace.cgiar.org/handle/10568/100029

Investigación en Agricultura
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Yaninek, John S. ,  Megevand, B. ,  Moraes, G.J. ,  Bakker, F. ,  Braun, A. ,  Herren, H.R. ,  [Establishment of the neotropicalpredator Amblyseius idaeus(Acari: Phytoseiidae) in Benin, West Africa] ,  Establishment of the neotropicalpredator Amblyseius idaeus(Acari: Phytoseiidae) in Benin, West Africa
Journal Article 1990

Autor: Yaninek, John S. Gutiérrez, A.P. Herren, H.R.

Seasonally dense populations of Mononychellus tanajoa (Bondar), feeding on the leaves of cassava, Manihot esculenta Crantz, significantly reduced the leaf, stem, and storage-root dry matter of mite-infested plants. Stressed plants met metabolic demands by remobilizing the dry matter in stems and ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101807

Investigación en Agricultura
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Yaninek, John S. ,  Gutiérrez, A.P. ,  Herren, H.R. ,  [Dynamics of Mononychellus tanajoa (Acari: Tetranychidae) in Africa: impact on dry matter production and allocation in cassava, Manihot esculenta] ,  Dynamics of Mononychellus tanajoa (Acari: Tetranychidae) in Africa: impact on dry matter production and allocation in cassava, Manihot esculenta
Journal Article 1990

Autor: Herren, H.R.

The cassava mealybug (CM), Phenacoccus manihoti Matile-Ferrero was unknown to science when it was first discovered in 1973, along the Congo-Zaire river in Central Africa. In 1981, following inten¬ sive exploration and taxonomie studies, CM was found to have originated from a limited area of South...

Enlace original: https://cgspace.cgiar.org/handle/10568/101846

Investigación en Agricultura
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Herren, H.R. ,  [Biological control as the primary option in sustainable pest management: the cassava pest project] ,  Biological control as the primary option in sustainable pest management: the cassava pest project
Journal Article 2001

Autor: Zeddies, J. Schaab, R.P. Neuenschwander, P. Herren, H.R.

Pest populations of the cassava mealybug Phenacoccus manihoti Mat.-Ferr. (Homoptera: Pseudococcidae) were reduced successfully by the biological control agent Apoanagyrus (Epidinocarsis) lopezi De Santis (Hymenoptera: Encyrtidae) throughout most of sub-Saharan Africa. The economics of the project...

Enlace original: https://cgspace.cgiar.org/handle/10568/92651

Investigación en Agricultura
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Zeddies, J. ,  Schaab, R.P. ,  Neuenschwander, P. ,  Herren, H.R. ,  [Economics of biological control of cassava mealybug in Africa] ,  Economics of biological control of cassava mealybug in Africa

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